Sole portion of golf club putter head



FIG. 1 is a perspective view of the sole portion of a golf club putter head embodying our new design; and

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a plan view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a right side elevational view thereof.

The broken line showing is for illustrative purposes only and forms no part of the claimed design. 

We claim the ornamental design for a sole portion of a golf club putter head, as shown and described. 